Tag dossier
Badge records tagged with NFC, across Colombia, Croatia, Denmark, Germany, Ireland, Italy, Taiwan.
JavaScript hackable BLE badge
An open-source hackable JavaScript badge for NodeConf EU 2017 in Kilkenny, built by NearForm around Gordon Williams' Espruino/Puck.js lineage with BLE, LCD, NFC, buttons, CR2032 power, attendee-name programming, code examples, and challenge behavior.
ESP32-C3 electronic badge for Hacking in Parallel
The Hacking in Parallel Berlin attendee badge was an ESP32-C3 electronic badge with RGB LEDs, USB-C Serial/JTAG, battery charging, NFC/I2C storage, SAO/I2C expansion, buttons, and RIOT OS board support.
NFC reader and tag badge pair
A two-badge NFC year: one tag badge using NXP NTAG I2C Plus and one RP2040 reader badge using NXP PN7150 with card-emulation capability.
Taiwanese badge mini-games and card-reader conference pass
HITCON CMT 2023's official events page says the badge was more than an identification badge: card readers and mini-games were placed at booths and around the venue, attendees used their badges to activate and interact with them, and the Activity Team booth provided NFC card readers for hands-on inspection.
RP2040 MicroPython badge with NFC and sensors
An Italian MuHack badge built around an RP2040, MicroPython, addressable LEDs, NFC, sensors, optional ESP32 connectivity, and a public MuHackademy workshop/talk trail.
NFC treasure-hunt and LED badge
The second electronic DORS/CLUC badge, built around NFC tag hunting, badge-to-badge interaction counters, LED-display modes, USB configuration and passthrough behavior, a simple game, open source files, and a public production all-nighter writeup.
Limited Colombian NFC hardware-hacking badge
A conservative Colombian DragonJARCON 2025 record for an optional electronic hardware badge and a separate DragonJARCON 2025 NFC hacking badge raffle limited to 100 units.
Planned nRF52840, SX1262 LoRa, BLE, and NFC badge
A future BornHack badge entry currently documented by Badge.Team through sponsor credits and a concise hardware-feature list.